close up photo of a small child& x27;s armpit with allergies. skin allergy, itching and redness.

allergen allergic allergies allergy arm armpit atopic back background body care chilblains childs close closeup condition dermatitis dermatology disease drug dry eczema girl hand health healthy hives human illness infection injury irritation itch itchiness itching itchy medical medicine pain patient people person photo problem rash reaction red redness scratch severe skin small symptoms treatment urticaria young